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2.5 or 2+1/2

Step-by-step explanation:

2 (2/5) walls (x) = 6 rolls of paper (y), solve for x

12/5x = 6y

multiple both sides by 5 to clear your fraction

12x = 30y

now divide by 12  to leave x alone

x = 30/12y

now simplify your fraction with your greatest common denominator:

GCD = 6 so 30/12y becomes 5/2y

Convert to whole numbers:

5/2 = 2 + 1/2 or 5/2 = 2.5

so x = 2.5y

OR x (your walls) use 2.5 y (rolls of paper) each

f(x) is the value of the function. b is the value of the function when x equals zero or the y-coordinate of the point where the line crosses the y-axis in the coordinate plane.

step-by-step explanation:

hope this !

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.